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{ config, lib, pkgs, ... }:
let
inherit (lib)
mkOption
optionalString
types
;
perlWrapped = pkgs.perl.withPackages (p: with p; [ ConfigIniFiles FileSlurp ]);
systemBuilderArgs = {
activationScript = config.system.activationScripts.script;
dryActivationScript = config.system.dryActivationScript;
};
systemBuilderCommands = ''
echo "$activationScript" > $out/activate
echo "$dryActivationScript" > $out/dry-activate
substituteInPlace $out/activate --subst-var-by out ''${!toplevelVar}
substituteInPlace $out/dry-activate --subst-var-by out ''${!toplevelVar}
chmod u+x $out/activate $out/dry-activate
unset activationScript dryActivationScript
mkdir $out/bin
substitute ${./switch-to-configuration.pl} $out/bin/switch-to-configuration \
--subst-var out \
--subst-var-by toplevel ''${!toplevelVar} \
--subst-var-by coreutils "${pkgs.coreutils}" \
--subst-var-by distroId ${lib.escapeShellArg config.system.nixos.distroId} \
--subst-var-by installBootLoader ${lib.escapeShellArg config.system.build.installBootLoader} \
--subst-var-by localeArchive "${config.i18n.glibcLocales}/lib/locale/locale-archive" \
--subst-var-by perl "${perlWrapped}" \
--subst-var-by shell "${pkgs.bash}/bin/sh" \
--subst-var-by su "${pkgs.shadow.su}/bin/su" \
--subst-var-by systemd "${config.systemd.package}" \
--subst-var-by utillinux "${pkgs.util-linux}" \
;
chmod +x $out/bin/switch-to-configuration
${optionalString (pkgs.stdenv.hostPlatform == pkgs.stdenv.buildPlatform) ''
if ! output=$(${perlWrapped}/bin/perl -c $out/bin/switch-to-configuration 2>&1); then
echo "switch-to-configuration syntax is not valid:"
echo "$output"
exit 1
fi
''}
'';
in
{
options = {
system.activatable = mkOption {
type = types.bool;
default = true;
description = ''
Whether to add the activation script to the system profile.
The default, to have the script available all the time, is what we normally
do, but for image based systems, this may not be needed or not be desirable.
'';
};
system.build.separateActivationScript = mkOption {
type = types.package;
description = ''
A separate activation script package that's not part of the system profile.
This is useful for configurations where `system.activatable` is `false`.
Otherwise, you can just use `system.build.toplevel`.
'';
};
};
config = {
system.systemBuilderCommands = lib.mkIf config.system.activatable systemBuilderCommands;
system.systemBuilderArgs = lib.mkIf config.system.activatable
(systemBuilderArgs // {
toplevelVar = "out";
});
system.build.separateActivationScript =
pkgs.runCommand
"separate-activation-script"
(systemBuilderArgs // {
toplevelVar = "toplevel";
toplevel = config.system.build.toplevel;
})
''
mkdir $out
${systemBuilderCommands}
'';
};
}
|